I agree with the grief the refs get. I remember last night you could see Ashley Cole swearing at collina because he didn't agree with his decision. They should start giving yellow cards for that, the players would soon stop it then!
Not to sure on Video refs, how would it be regulated? would we be going to the video ref at every free kick?
Its tough for the refs on the diving issue, its very hard to see if there has been contact or not - as proven in the Villa - Man Utd game were Ronaldo was yellow carded for diving (which then led to him being sent off) the ref then took the yellow card away after the game when the replays showed he didn't dive.
I think that when the games are reviewed, if its clear that a player has dived then action should be taken, whether its banning the player or if a goal was gained, then taking the goal away.
Remember its not just foreign players - Mr Owen, Mr Gerrard, Mr Neville, Mr Scholes